Answer the questions with fill in the blank.

Answer :

(7) When phenolphthalein is added to the solution of pH 10 (basic) then the color will be pink.

(8) When the litmus is blue in a solution that means the solution is basic in nature.

(9) The range of methyl orange is 3.2 - 4.4 (red-yellow).

The range of bromothymol blue is 6.0 - 7.6 (yellow-blue).

Explanation :

Part 7:

As the phenolphthalein is a synthetic indicator which is used to detect color change when an acid and a base is added to it. The neutral color of phenolphthalein is colorless.

Phenolphthalein indicator is colorless in acidic solution.

Phenolphthalein indicator gives pink color in basic solution.

When phenolphthalein is added to the solution of pH 10 (basic) then the color will be pink.

Part 8:

As the most common indicator used in the laboratory for testing acids and bases is litmus paper.

Litmus paper is of two types which are blue litmus and red litmus.

As the solution is acidic in nature then the litmus paper turns blue to red and as the solution is basic in nature then the litmus paper turns red to blue.

According to the question, when the litmus is blue in a solution that means the solution is basic in nature.

Part 9:

The range of methyl orange is 3.2 - 4.4 (red-yellow).

The range of bromothymol blue is 6.0 - 7.6 (yellow-blue).

odds are decent that your handwriting right now looks a little bit different than it did five years ago, and will look different again in five more. when i look back through my notebooks from middle school to now, i see a long, slow progression from meticulous and teeny letters to bigger, sloppier ones, plus a few side detours: sometime in high school, for example, i decided those loopy cursive lowercase f’s were just the coolest, adopting them as the lone rep for cursive in my otherwise all-print handwriting.

explanation:

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)